231277308212 has 6 divisors (see below), whose sum is σ = 404735289378. Its totient is φ = 115638654104.

The previous prime is 231277308211. The next prime is 231277308337. The reversal of 231277308212 is 212803772132.

It can be written as a sum of positive squares in only one way, i.e., 157383584656 + 73893723556 = 396716^2 + 271834^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231277308211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28909663523 + ... + 28909663530.

It is an arithmetic number, because the mean of its divisors is an integer number (67455881563).

Almost surely, 2^231277308212 is an apocalyptic number.

It is an amenable number.

231277308212 is a deficient number, since it is larger than the sum of its proper divisors (173457981166).

231277308212 is a wasteful number, since it uses less digits than its factorization.

231277308212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57819327057 (or 57819327055 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The spelling of 231277308212 in words is "two hundred thirty-one billion, two hundred seventy-seven million, three hundred eight thousand, two hundred twelve".